Huh. Isn't Ditzy Doo a Derpy recolor? 'Cause a purple maned pony that looks like Derpy brought the birds to the south. broni.es/thread-11745.html I personally think that Ditz and the Derp-ster are cousins. Just sayin'.

Yes.She is called Dery because of her eyes (Derp eyes).But the original name is in fact Ditzy Doo.

She wal called Ditzy Doo in the Winter Wrap Up Episode, Whoever, in season 2 she was called Derpy by Rainbow Dash.After that episode a big confusion started because some people claimed that it was a disrespect to mentally disavantaged people (Depry is a also a crul nickname for mentally retarded, however, the fandom and the producers called it derpy because of the EYES, which are called DERP EYES).After this incident Ditzy Doo (Derpy) Had no more roles in the show and she became just an easter egg that you can try to find in every episode.